Year % of female population 1960 36.0107924827516 1961 36.1598137353103 1962 36.3914290932983 1963 36.6879661251314 1964 36.9659732394581 1965 37.1728879459087 1966 37.3485467110585 1967 37.5030016231224 1968 37.6172414663452 1969 37.6875357200466 1970 37.7092910346263 1971 37.6785186599974 1972 37.5721232963194 1973 37.3722915331772 1974 37.057384400484 1975 36.5865794582288 1976 35.9271786315149 1977 35.0591142101865 1978 33.9938320390423 1979 32.7815792128585 1980 31.4826499338151 1981 30.1219132539634 1982 28.8346827863796 1983 27.7031266660548 1984 26.6517849675088 1985 25.6502246900442 1986 24.6969764166278 1987 23.835803430416 1988 23.1313228037762 1989 22.5979489249408 1990 22.2226792834613 1991 21.9522845839234 1992 21.7395752444448 1993 21.582244712116 1994 21.485991435102 1995 21.4444012303427 1996 21.4247122387737 1997 21.3317271686109 1998 21.135789941525 1999 20.9001757527325 2000 20.6334139614571 2001 20.3389108738407 2002 20.018194559086 2003 19.6437776182528 2004 19.2114644213071 2005 18.7563361763346 2006 18.3233544738985 2007 17.9498557582504 2008 17.6452735638613 2009 17.4039775694024 2010 17.2014943293123 2011 17.0183161801834 2012 16.8257289238171 2013 16.6084611449285 2014 16.377741108467 2015 16.1522006824345 2016 15.9285689248626 2017 15.7030187490524 2018 15.5181231274988 2019 15.3748289615674 2020 15.2560750754766 2021 15.1788547045286 2022 15.0882016575989 2023 14.9329273857763